Functionalized anthradithiophenes for organic field-effect transistors

Ming Chou Chen*, Choongik Kim, Sheng Yu Chen, Yen Ju Chiang, Ming Che Chung, Antonio Facchetti, Tobin Jay Marks

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

Abstract

Two new semiconductors for organic thin-film transistors (OTFTs), diperfluorophenyl anthradithiophene (DFPADT) and dimethyl anthradithiophene (DMADT), have been synthesized and characterized. The first material exhibits ambipolar transport in OTFT devices with field-effect mobilities (μ) of 6 × 10-4 cm2 V-1 s-1 and 0.05 cm2 V-1 s-1 for electrons and holes, respectively. Therefore, diperfluorophenyl substitution was found to be effective to induce n-type transport. Dimethyl-substituted anthradithiophene (DMADT) was also synthesized for comparison and exhibited exclusively hole transport with carrier mobility of ∼0.1 cm2 V-1 s -1. Within this semiconductor family, OTFT carrier mobility values are strongly dependent on the semiconductor film growth conditions, substrate deposition temperatures, and gate dielectric surface treatment.

Original languageEnglish (US)
Pages (from-to)1029-1036
Number of pages8
JournalJournal of Materials Chemistry
Volume18
Issue number9
DOIs
StatePublished - Feb 22 2008

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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